Interesting - so the (slightly) larger on chain size is more than compensated for in your mind by the flexibility?

IIUC these two can do everything that APO + CTV can do with just a few "extra" witness bytes in typical usage, and TXHASH+CSFS can also do many things that CTV+APO cannot.

reardencode

My favorite combo is OP_TXHASH + OP_CHECKSIGFROMSTACK.

brqgoo

I believe op_ctv's byte-efficiency would be greatest, but not positive.

bitcoin

Ark AMA

* `op_ctv`
* `sighash_anyprevout`
* `op_cat`
* `something else`

Which covenant soft-fork or combination of them would be most optimal for building the best Ark? 